五、發明説明（1 ) <技術範國> 本發明乃關於：獲得使用於鋼筋等之異形棒鋼（ deformed re i n fore i ng bar ,亦稱：竹節強化鋼筋）所 用之輥軋（rolling)方法，尤其是有關：將具有向長度 方向延伸之四條肋（r i b )之異形棒鋼，可由雙軋輥軋 機（two roll rolling machine)穩定獲取之方法，以及 此方法所使用之軋輥（r 〇 1 1 )者。 <背景技術> 第6圖乃表示以往之一般性之異形棒網者。在第6圖 中’ （a )乃爲側面圖，（b )則爲（a )之X — X線斷 面圚。此異形棒鋼5，乃在圃棒材之周圍，以等間隔在長 度方向形成有沿周方向之多數凸部（節）1 2者。並且， 沿長度方向之兩條凸稜（r i b ) 4，乃在斷面園之周方 向形成於距離180°之位置· 經濟部中央樣準局負工消费合作社印裝 此種異形棒鋦5，乃以雙軋輥軋機串聯排列複數台之 熱間連績輥軋設備之最終加工輥軋機，使用第7圓及第8 圖所示之加工軋輥Ri、R2來輥軋所製造者· 第7圖乃爲表示兩加工輥軋之配置之正面圖，第8圃 (a)乃輥軋周面之展開圖，（b)則爲（a)之Y — Y 線斷面圓•由此等圓可知，在形成最終加工用之孔模（模 穴）之兩加工輥軋Ri、R2，乃在其周方向之全體間，形 有斷面爲略半圔形狀之周溝3 ·並且，在周溝3之溝面， 亦形成有與此周溝3直交之節溝2 · 本紙張尺度逍用中國國家镖率（CNS ) A4规格（210X297公釐> 7 經濟部中央標準局員工消费合作社印製 A7 _B7_ 五、發明説明（2 ) 然後，由兩加工輥軋R^、R 2所形成之孔模（模穴） ，插入並通過由上游側之輥軋機列被輥軋成斷面爲椭圓形 之材料S，由此即可在圃棒材周面，形成：按照節溝2被 壓成之節1 2，及材料S從輥軋Ri、112間被咬壓出來所 生之肋（凸稜）4。 並且，異形棒鋼之節有時亦被配置成：對長度方向傾 斜之狀態。在此情形下，則如第9圖所示，加工輥軋R之 節溝2將被形成：對周方向傾斜規定角度α之狀態。在第 9圖中，（a)乃爲軋輥R之周面之展開圖，（b)則爲 其Z - Z線斷面圇。在此情形下，所得之異形棒鋼之肋， 乃由加工軋輥R間被晈壓出來所形成。 近年來，將此種異形棒鋼以加工機械來加以折曲之作 業，已在盛行。在此情況下，因肋僅爲兩條，故在加工機 械之输送裝置（進給裝置）或支持裝置中，將異形棒鋦之 表面穩定加以支持（把持）*顯然已較爲困難•爲此，在 周方向具有略爲等間隔之四條肋之異形棒鋼，其需求已日 益殷切。並且，異形棒鋼亦被使用爲鋼筋混凝土之鋼筋， 若肋爲四條則混凝土之附著力將被提高，此亦爲一利點· 惟製造具有四條肋之異形棒鋼之技術卻尙未確立•例 如，本申請人等先前所提出之技術（參照日本特開平7 — 3233002號專利公報），乃在最終加工輥軋機使用 輥ϋ;由 此雖可製造四條肋之異形棒鐦，但成本將 超髙。並且，最後加工輥軋之雙軋輥軋機來進行·以製造 四條肋之技術，亦尙未實用化· 本纸張尺度逋用中國國家榡準（CNS ) Α4规格（210X297公釐） ~ 一 ~ (請先閲讀背面之注意事項再楨寫本頁) .裝· 訂 線 S05778 經濟部中央橾準局員工消費合作社印袈 A7 B7五、發明説明（3 ) 本發明乃有鑑於此種情形所提出者，其目的方法提供 :最終加工輥軋以雙軋棍軋機來進行，由此可獲得形成有 節及四條肋之異形棒鋼（deformed reinforcing bar) 之輥軋方法，及異形棒鋼用之軋輥（rol 1)者· <發明之概要> 本發明之異形棒鋼之輥軋方法，乃以雙軋輥乳通( two roll rolling machine)被串聯排列複數台之熱間連 績輥車 L 設備（hot continuous rolling equipment)之最 終加工輥軋機，在被進給之材料周面形成節及肋之異形棒 鋼之輥軋方法中；採取以具有：在軋輥周面被設在周方向 〆.一 全體間之斷面爲4生之周溝:及在此周溝面被設置成ι ................. 與該周溝交叉之節溝；及在前述周溝之溝宽方向中心部， 被設於周方向全體間之斷面爲略梯形狀，而開口部宽度較 1 丨 UIU 拉’ 低部宽度爲大之底溝:等之一對兩個之軋輥來進行最終加 . ”丨丨’丨—叫―丨ι. 工輥軋，並由軋輥間之咬壓及底溝來形成四條之肋等爲方 法者。 依據此種方法，除由軋輥間之咬壓所形成之兩條肋外 ，由形成在各軋輥之底溝亦將形成兩條肋•底溝所形成之 肋因被設在前述周溝之溝寬方向中心部，故將可獲得：在 園周方向等間隔或略等間隔形成有四條肋之異形棒網· 並且，前述軋輥乃例如第1圖所示，被配置成：底溝 1之底面與節溝2之底面爲一段，且節溝2之與周溝3亦 直交之狀態：並且如第2圖所示•亦宜設定條件成：咬應 (請先閲讀背面之注意事項再填寫本頁) .裝. 訂 本紙張尺度逋用中國國家標準（CNS ) A4規格（210X297公釐） A7 ___B7 五、發明説明（4 ) 所成肋4 a、4b間之寬Hi能與節溝2之斷面圖之直徑 A 致或略爲一致，來進行輥軋較佳。 依據此方法*除四條肋被形成向園周方向等間隔或略 爲等間隔之外，所有肋之外周面亦與節之外周面成爲一致 或略爲一致，同時節亦對肋形成直角之狀態。 並且，前述軋輥亦如第2圖所示，底溝1之深度爲製 品之平均徑之Cl 0%以ί)，底溝1則斷面呈略等邊（等腳 _·丨丨 _ _丨. ..... .. )梯形狀，而其不平行之兩邊所成角度爲1 0°以上，且 底溝1之底部宽b身爲前ί^平均徑之4 以上等爲宜· 1....... 此外，前述所謂略梯形狀及略等邊（等腳）梯形狀， 乃爲梯形（不包括平行四邊形）以及等邊梯形之平行之兩 邊，嚴密言，乃非直線，而呈同心圖之圓弧狀者·然後， 此等圓弧之較短一方亦形成底溝之底面，之一方則形 "^^^**"***·* * ·η" 11 -nmrrt· in ,! „)ΜίιΜΜ, 良開口部·而且，前述所謂製品之平均徑，亦指：除異形 棒鋼之節以及肋（凸稜）外之画棒部分之平均直徑· 經濟部中央橾準局貝工消費合作社印製 I ! ： 7 裝！ (請先閲讀背面之注意事項再填寫本瓦) 在此，如第2圈所示，材料S之行進速度雖與軋輥 Rx、R2之周面之旋轉速度一致，但成爲f溝1開口部之 周溝3之角部a ，則其旋Jft半徑|/上：在此角部a之旋轉 -- -..................一-· - - —·"* 一-一:咖-，：... r.」—_______-......一,—.. 速度」.將嚴材料S之行進速:度爲爲此，此角部a在輥 軋時，將有勉強之力作用而易於龜裂：惟將底溝1之形狀 限定成如前述狀態，即可使其不易龜裂· 實際上，使前述角度0及溝寬心變化，來調査軋輥角 部a是否發生龜裂；結果，將底溝1之深度定爲日本 JIS規格之上限之製品平均徑之1〇%時，獲得如第3 本紙張尺度適用中國國家橾準（CNS > A4规格（210 X 297公釐）， 經濟部中央標牟局貝工消费合作杜印装 A7 B7 五、發明説明（5 ) 圖之曲線圖所示結果•從此曲線圖可知，底溝1之深度爲 製品平均徑之10%時，角度0爲10°以上；且溝寬b 爲製品平均徑之4%以上時，則不發生軋輥之裂損•並且 ，底溝进、時為氟不易盈生.癉裂，放底溝1之深 度爲未滿製品平均徑之10%時，角度0亦爲10°以上 :溝寬度爲製品平均徑之4%以上，則將不致發生軋輥之 裂損。 此外，底溝1之溝宽較大，雖角度0較大者其軋輥愈 不易裂損，但此等之上限值亦將依JIS等所定之製品規 格來設定β 本發明亦將提供：具有在軋輥周面被設在周方向全體 間之斷面爲略半園狀之周溝，及在此周溝面被設置成與該 周溝交叉之節溝，及在前述周溝之溝宽方向中心部被設在 周方向全體間之斷面爲略梯形狀而開口部宽較低部寬爲大 之底溝，等之異形棒鋼輥軋用軋輥· 前述異形棒鋼輥軋用軋輥，乃宜配置成：前述底溝之 底面與節溝之底面爲一致，且節溝與前述周溝能直交之狀 態。 前述異形棒鋼輥軋用軋辊，進一步，亦宜：前述底溝 之深度與製品平均徑之1 0%以下，前述底溝之斷面亦爲 略等邊梯形狀而其不平行之兩邊所成角度則爲10°以上 •且該底溝之底部寬度亦爲前述平均徑之4%以上；等爲 佳。 本紙張尺度適用中國國家橾準（CNS ) Α4規格（2丨0 X 297公釐） (請先閱讀背面之注意事項再填寫本頁) -裝- *vs _ 8 - 經濟部中央橾準局貝工消費合作杜印製 A7 I____B7 五、發明説明（6 ) <附圖之簡單說明> 第1圖：表示本發明之理想之最終加工用雙軋輥軋機 之軋輥之圓；（a)乃爲軋輥周面之展開_，（b)則爲 (a) 之D-D線斷面圈。 第2圖：表示將本發明之理想方法加以實施所用之最 終加工用雙軋輥軋機之軋輥配置正面圖。 第3圖：說明本發明之作用之曲線圓· 第4圖：表示本發明之一實施形態之最終加工用雙軋 輥軋機之軋輥孔模之正面圖· 第5圖：表示本發明之一資施形態所得之異形棒鋼之 進料輥（feed roller)內之狀態之圓；（a)〜（c) 乃表示各不同狀態者。 第6園：表示以往之異形棒鋼之一例之圖；（a)乃 側面圖，（b )則其X — X線斷面圖。 第7圖：表示獲得第6圔之異形棒鋼所用之最終加工 用雙軋輥軋機之軋輥配置之概要圖。 第8圖：表示第7圔之軋輥之展開圖（a)，及其Y -Y線斷面圖（b )。 第9圖：表示以往之異形棒鋼輥軋所使用之最終加工 用雙軋輥軋機之軋輥之圈* (a)乃軋輥周面之展開圖， (b) 貝(1(a)之Z — Z線斷面圖。 <實施本發明所用之最佳形想> 爲進一步詳細說明本發明，下面參照附圖來說明其一 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁) 裝. 訂 A7 B7 五、發明説明（7 ) 實施形態。 請 先 閱 讀 背 面 之 注 意 事 項 再 填 寫 本 頁 第1圖乃爲表示本實施形態所使用之最終加工用雙軋 輥軋機之軋輥之圚，（a)乃軋輥周面之展開圖，（b) 則（a)之D — D線斷面圖。並且，第4圓則表示：在此 實施形態中，以第1圖之軋輥所形成之最終加工用雙軋輥 軋機之軋輥孔模之正面圓。 如第1圖所示，軋輥RiCRs)乃在軋輥周面，於周 方向全髖間形成有斷面爲略半園狀之周溝3。並且，在此 周溝亦刻設有規定宽度之節溝2成：與周溝3之溝宽方向 中心線L。直交之狀態。此節溝2乃沿周溝3之周方向（ 亦即溝寬方向中心線L0)以等間隔形成。而且，在周溝 3之溝宽方向中心部，亦於周方向全髏間，形成有断面爲 略等邊（等腳）梯形狀而開口部宽度較低部宽度爲大之底 溝1。 如第4圖所示，底溝1之底面乃與節溝2之底面一致 。並且，底溝1及節溝2之深度c乃爲〇. 85mm，孔 模（模穴）之直徑（製品之平均徑）A2則爲1 5. 9 經濟部中央標準局貝工消費合作社印製 mm，成爲底溝1之斷面之等邊梯形之不平行之兩邊所成 角度0乃爲60° ，底溝1之底部宽度b爲2. 0mm· 並且，與軋輥尺^^、R2周面之周溝3之境界部分，亦形成 有傾斜部3 a。軋輥間隙d乃定爲2. 0mm，兩軋輥 之傾斜部3 a互相所成之角沒則定爲60° 。在 此，底溝1之底側之溝宽b乃各相等於製品之平均徑A2 之 1 3 %。 本紙张尺度遙用中國國家梂準（CNS〉A4规格（2丨0 X 297公羞） 10 - 305778 A7 B7 五、發明説明（8 ) (請先W讀背面之注意事項再填寫本頁) 將此種雙軋輥軋機作爲最終加工輥軋機來設置，並將 通常之雙軋輥軋機列被輥軋至規定外徑尺寸之園棒材來加 以加工輥軋。此時，如前述之第2圖所示，爲使走出最終 加工輥軋機之材料S被咬壓所成肋（凸稜）4a、4b之 寬度Η:，能夠與節溝2之断面園之直徑Αι —致，乃調整 被配置於最終加工輥軋機即前之輥軋機之軋輥間隙· 結果，即無軋輥裂損之麻煩事故，四條肋（凸稜）亦 在圓周方向被形成略等間隔之狀態，所有肋之外周面亦與 節之外周面一致，獲得節對肋形成直角之異形棒鋼·V. Description of the invention (1) < Technical Fan Guo > The present invention relates to: a rolling method for obtaining deformed re in fore i ng bar (also known as: bamboo reinforced bar) In particular, the method of stably obtaining a bar with four ribs extending in the longitudinal direction can be obtained by a two-roll rolling machine, and the roll (r 〇1 1) used in this method . < Background > Fig. 6 shows a conventional general shaped bar net. In Figure 6, ‘(a) is a side view, and (b) is the X-X section of (a). This special-shaped bar steel 5 is formed with a large number of convex portions (nodes) 12 along the circumferential direction at regular intervals around the garden bar. In addition, the two ribs 4 along the length direction are formed at a distance of 180 ° in the circumferential direction of the cross-section garden. The Central Bureau of Economics of the Ministry of Economic Affairs prints this kind of shaped rods 5, It is a final processing rolling mill with multiple hot-rolling rolling equipment arranged in series by a double-rolling mill, using the processing rolls Ri and R2 shown in circles 7 and 8 to roll the manufacturer. Figure 7 is In order to show the front view of the configuration of the two processing rolls, the eighth garden (a) is an expanded view of the rolling circumferential surface, and (b) is the Y-Y line cross-section circle of (a). The two processing rolls Ri and R2 that form the hole die (cavity) for final processing are circumferential grooves 3 with a slightly half-shaped cross section between the entire circumferential direction 3 and the circumferential groove 3 The ditch surface also forms a section ditch 2 that is perpendicular to the ditch 3 of this week. 2. This paper standard uses the Chinese national dart rate (CNS) A4 specification (210X297 mm). 7 Printed by the employee consumer cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. _B7_ V. Description of the invention (2) Then, the hole die (cavity) formed by the two processing rolls R ^ and R 2 is inserted and passed Rolled by the upstream rolling mill row into a material S with an oval cross-section, it can be formed on the circumferential surface of the bar bar: according to the joint groove 2 is pressed into the section 1 2 and the material S from The ribs (convex ribs) produced by the bite-pressing between the rolling Ri and 112. In addition, the section of the profiled bar steel is sometimes arranged in a state of being inclined to the longitudinal direction. In this case, it is as shown in Figure 9 As shown, the groove 2 of the processing roll R will be formed in a state inclined by a predetermined angle α to the circumferential direction. In Figure 9, (a) is an expanded view of the circumferential surface of the roll R, and (b) is The Z-Z line section. In this case, the ribs of the shaped bar steel are formed by pressing between the processing rolls R. In recent years, this kind of shaped bar steel has been bent by processing machinery The operation is already prevalent. In this case, because there are only two ribs, it is necessary to stabilize (hold) the surface of the special-shaped rod in the conveying device (feeding device) or support device of the processing machine * More difficult • For this reason, there is an increasing demand for profiled bar steel with four ribs at slightly equal intervals in the circumferential direction In addition, the special-shaped bar steel is also used as the reinforced concrete steel bar. If the number of ribs is four, the adhesion of the concrete will be improved, which is also a benefit. However, the technology for manufacturing special-shaped bar steel with four ribs has not yet been established. For example, the technology previously proposed by the applicant and others (refer to Japanese Patent Laid-Open No. 7-3233002) uses rollers ϋ in the final processing rolling mill; thus, although four-rib shaped rods can be manufactured, the cost will exceed High. And, the final processing of the rolling double-roll mill to make four-rib technology is also not practical. This paper standard uses the Chinese National Standard (CNS) Α4 specification (210X297 mm) ~ 1 ~ (Please read the precautions on the back before writing this page). Binding · Stranding S05778 Ministry of Economic Affairs Central Bureau of Accreditation Employee Consumer Cooperative Printed A7 B7 5. Description of the invention (3) The present invention is based on this situation The author proposes that the purpose of the method is to provide: the final processing rolling is carried out by a double-roller rolling mill, from which a rolling method of forming a deformed reinforcing bar with knots and four ribs can be obtained, and Roller for special-shaped bar steel (rol 1) · < Summary of the invention > The rolling method of the special-shaped bar steel of the present invention is a two-roller rolling machine (two roll rolling machine) which is arranged in series with a plurality of thermal units Roller L equipment (hot continuous rolling equipment) of the final processing of the rolling machine, the material is fed into the circumferential surface of the steel bar forming method of forming knots and ribs; adopted to have: the roll peripheral surface is set in the circumferential direction 〆. A cross-section of a whole is a four-weekly circumferential groove: and here the circumferential groove surface is set to ι ................. The nodal groove intersecting the circumferential groove ; And the central part of the groove in the width direction of the aforementioned circumferential groove, the cross section provided in the entire circumferential direction is slightly trapezoidal, and the width of the opening is less than 1 丨 UIU pull 'the lower part of the width is a large bottom groove: one of etc. The final addition of two rolls is done. ”丨 丨 '丨 —called ― 丨 ι. Work roll rolling, and the four ribs are formed by the bite pressure between the rolls and the bottom groove. According to this method, in addition to the two ribs formed by the nip between the rolls, the bottom groove formed on each roll will also form two ribs. The rib formed by the bottom groove is located in the groove of the aforementioned circumferential groove The central part in the width direction, it will be possible to obtain: a profile bar with four ribs formed at equal or slightly equal intervals in the circumferential direction. Furthermore, the rolls are arranged as shown in FIG. 1 as follows: the bottom surface of the bottom groove 1 The bottom surface of the joint groove 2 is a section, and the joint groove 2 and the circumferential groove 3 are also orthogonal to the state: and as shown in Figure 2 • It should also be set to the condition: bite should (please read the precautions on the back before filling in this Pages). Packing. The size of the bound paper adopts the Chinese National Standard (CNS) A4 specification (210X297 mm) A7 ___B7 5. Description of the invention (4) The width of the ribs 4a and 4b and the groove 2 The diameter A of the cross-sectional view is consistent or slightly the same, and it is better to roll. According to this method, except that four ribs are formed at equal or slightly equal intervals in the circumferential direction, the outer peripheral surfaces of all ribs also become identical or slightly identical to the outer peripheral surfaces of the nodes, and the nodes also form a right angle to the ribs . In addition, the aforementioned roll is also shown in Fig. 2, the depth of the bottom groove 1 is Cl 0% of the average diameter of the product, and the bottom groove 1 is slightly equilateral in cross section (isofoot_ · 丨 丨 丨 _ _ 丨.....) The shape of the ladder, and the angle formed by its non-parallel sides is more than 10 °, and the width of the bottom of the bottom ditch 1 is more than 4 of the average diameter of the front ^^ 1 ....... In addition, the aforementioned so-called slightly trapezoidal shape and slightly equilateral (equilateral) trapezoidal shape are trapezoidal (excluding parallelograms) and the parallel sides of the equilateral trapezoid, strictly speaking, are not straight lines, And those with a circular arc in a concentric graph. Then, the shorter side of these arcs also forms the bottom surface of the bottom groove, and one of the squares is shaped " ^^^ ** " *** · * * η " 11 -nmrrt · in,! „) ΜίιΜΜ, good openings, and the above-mentioned average diameter of the product also refers to: the average diameter of the painted bar portion except for the special-shaped bar steel section and the ribs (convex ribs) · Central Ministry of Economic Affairs Printed by the quasi-registration Beigong Consumer Cooperative I: 7 packs! (Please read the precautions on the back before filling in this tile) Here, as shown in the second circle, the speed of the material S travels with the roller Rx, The rotation speed of the circumferential surface of R2 is the same, but the corner a of the circumferential groove 3 of the opening of the f groove 1 is then the radius of rotation Jft radius | / upper: the rotation of the corner a at this ---...... ............ One-·---" * One-one: coffee-,: ... r. "—_______-...... one, — .. "Speed". The speed of the strict material S: degree. For this reason, this corner a will have a reluctant force when rolling, and it is easy to crack: but the shape of the bottom groove 1 is limited to the aforementioned state, namely It can make it less prone to cracking. In fact, the aforementioned angle 0 and the groove width center are changed to investigate whether cracking occurs in the corner a of the roll; as a result, the depth of the bottom groove 1 is set as the average diameter of the upper limit of the Japanese JIS standard. At 10%, obtain the third paper standard applicable to the Chinese National Standard (CNS > A4 specifications (210 X 297 mm), the Ministry of Economic Affairs, Central Standard Bureau, shellfish consumer cooperation, du printing, A7 B7 V. Description of invention (5) The results shown in the graph of the graph • From this graph, we can see that when the depth of the bottom groove 1 is 10% of the average diameter of the product, the angle 0 is more than 10 °; and the groove width b is more than 4% of the average diameter of the product , There will be no roll damage When the bottom groove enters, it is not easy for fluorine to prosper. Cracking, when the depth of the bottom groove 1 is 10% of the average diameter of the less than product, the angle 0 is also more than 10 °: the width of the groove is more than 4% of the average diameter of the product , There will be no roll damage. In addition, the groove width of the bottom groove 1 is larger. Although the angle 0 is larger, the roller is less likely to crack, but these upper limits will also be in accordance with the product specifications set by JIS. The present invention will also provide: a circumferential groove having a semi-circular cross section that is provided in the entire circumferential direction of the roll circumferential surface, and a circumferential groove where the circumferential groove surface is arranged to intersect the circumferential groove , And the bottom groove of the circumferential groove at the center of the groove in the width direction is slightly trapezoidal in shape, and the bottom groove is wide at the lower part of the width of the opening. The roller for special-shaped bar steel rolling is preferably configured such that the bottom surface of the bottom groove and the bottom surface of the nodal groove are the same, and the nodal groove and the circumferential groove can intersect at right angles. The above-mentioned rollers for special-shaped bar steel rolling are further preferably: the depth of the bottom groove is less than 10% of the average diameter of the product, and the cross-section of the bottom groove is also formed by a slightly equilateral trapezoidal shape and its non-parallel sides The angle is more than 10 °. • The width of the bottom of the bottom groove is also more than 4% of the aforementioned average diameter; etc. is preferred. This paper scale is applicable to China National Standards (CNS) Α4 specifications (2 丨 0 X 297mm) (please read the precautions on the back before filling out this page) -Installed-* vs _ 8-Central Ministry of Economic Affairs A7 I____B7 produced by industrial-consumer cooperation. V. Description of the invention (6) < Brief description of the drawings > Figure 1: The circle of the roller of the dual-roll mill showing the ideal final processing of the present invention; (a) is The unfolding of the circumferential surface of the roll, (b) is the DD line section circle of (a). Fig. 2: Front view showing the roll arrangement of a dual-roll mill for final processing used in implementing the ideal method of the present invention. Fig. 3: Curve circle illustrating the function of the present invention. Fig. 4: Front view of the roll hole die of the dual-roll mill for final processing according to an embodiment of the present invention. Fig. 5: Show one of the present invention. The shape of the round shape of the feed bar (feed roller) of the special-shaped bar obtained by the shape; (a) ~ (c) represent the different states. The sixth garden: a diagram showing an example of the conventional shaped bar steel; (a) is a side view, and (b) is its X-X cross-sectional view. Fig. 7: A schematic diagram showing the roll arrangement of the dual-roll mill for final processing used to obtain the sixth-shaped profiled bar steel. Figure 8: Shows the unfolded view (a) of the seventh roll and its Y-Y line cross-sectional view (b). Figure 9: Shows the roll circle of the double-roll mill used for the final processing of the special-shaped bar steel rolling * (a) is an expanded view of the circumference of the roll, (b) Z (Z) line of (1 (a) Sectional view. ≪ Best idea for implementing the present invention > In order to further explain the present invention in detail, the following refers to the accompanying drawings to illustrate that one of the paper scales is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) ( Please read the precautions on the back and then fill out this page) Pack. Order A7 B7 V. Description of the invention (7) Implementation form. Please read the precautions on the back and then fill in this page. Figure 1 is used to indicate the form used in this embodiment The roll of the double-roll mill for final processing, (a) is an unfolded view of the roll surface, (b) is a cross-sectional view taken along line D-D of (a). And, circle 4 indicates: in this embodiment form In the figure, the front circle of the roll die of the dual-roll mill for final processing formed by the rolls in Figure 1. As shown in Figure 1, the roll RiCRs) are formed on the roll circumferential surface and are broken between the entire hips in the circumferential direction The surface is slightly semi-circular Zhougou 3. Also, here, the circumferential groove is also provided with a pitch groove 20% of a predetermined width: the center line L of the circumferential groove 3 in the groove width direction. The state of direct crossing. The pitch grooves 2 are formed at equal intervals along the circumferential direction of the circumferential groove 3 (that is, the center line L0 in the groove width direction). Further, at the central part of the groove width direction of the circumferential groove 3, there is also formed a bottom groove 1 having a trapezoidal shape with a substantially equilateral (equal foot) trapezoidal cross-section and a lower opening width part having a larger width. As shown in Figure 4, the bottom surface of the bottom groove 1 is the same as the bottom surface of the bottom groove 2. In addition, the depth c of the bottom groove 1 and the knot groove 2 is 0.85 mm, and the diameter of the hole mold (cavity) (the average diameter of the product) A2 is 1.5.9 Printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs mm, the angle 0 formed by the non-parallel sides of the equilateral trapezoid of the cross section of the bottom groove 1 is 60 °, and the bottom width b of the bottom groove 1 is 2.0 mm · And, with the roller scale ^^, R2 peripheral surface A sloping portion 3 a is also formed at the boundary part of the Zhougou 3. The roll gap d is set to 2.0 mm, and the angle formed by the inclined portions 3 a of the two rolls is set to 60 °. Here, the groove widths b on the bottom side of the bottom groove 1 are each equal to 13% of the average diameter A2 of the product. The size of this paper is remotely used in China National Standard (CNS> A4 specification (2 丨 0 X 297 public shame) 10-305778 A7 B7 5. Invention description (8) (please read the precautions on the back and fill in this page) Such a double-rolling mill is installed as a final processing rolling mill, and the normal double-rolling mill row is rolled to a round bar with a predetermined outer diameter for processing and rolling. At this time, as shown in the second figure above In order to make the width S of the ribs (convex ribs) 4a and 4b formed by the material S coming out of the final processing rolling mill bitten and pressed, it can be adjusted to the diameter A of the cross-sectional circle of the groove 2 and adjusted to be arranged in the final processing The roll gap between the rolling mill and the former roll mill · As a result, there is no troublesome accident of roll cracking. The four ribs (ribs) are also formed at a slightly equal interval in the circumferential direction. The outer peripheral surface of all ribs is also the outer periphery of the joint. Consistent surface, obtained right-angled bar steel with nodal pairs forming right angle
旋轉，亦 6 a經常 因此，所得之異形棒鋼5乃如第5圖（ 所示，即使在加工機械之输送裝置之進給輻 至少有一條肋（凸稜）4可與進給輥6之各 碰觸。爲此，異形棒網5將確實被進給輥6所支持而被正 確進行進給（進料）。 而且，因節1 2對肋4乃爲直角相交，放在彎曲加工 時將不致發生扭曲現象，此亦爲一優點。 經濟部中央標準局男工消費合作社印製 並且，在前述實施形態，底溝1之深度c乃被設定爲 製品之平均徑A 2之5. 3%，底溝1之底側之溝寬b則 被定爲製品之平均徑六2之1 3%，由此將可獲得無軋輥 裂損之麻煩事故，而可稞定具有4條肋4之異形棒鋼。 <產業上之利用可能性> 如上述，依據本發明之方法，因將最終加工輥軋由雙 軋輥軋機來進行，由此乃可穩定獏得形成有節（竹節）及 本紙張尺度適用中國國家標準（CNS > A4規格（2丨0X297公釐） 11 A7 B7 五、發明説明（9 ) 4條肋（凸稜）之異形棒鋼。由此，將可留用以往製造兩 條肋（凸稜）之異形棒鋼所用之輥軋設備，僅改變其最終 加工用雙軋輥軋機之軋輥，即可獏得四條肋（凸稜）之異 形棒鋼•因此，本發明之方法及軋輥，將可作爲低成本來 製造四條肋（凸稜）之異形棒鋼之方法，以及其所用之軋 輥來適宜利用。 請. 先 閲 ^ . 背 之 注 項 填 本 頁 裝 訂 經濟部中央橾準局員工消費合作社印製 用 I適 i準 標 國 I國 公 7 9 2Rotation, also 6 a often. Therefore, the resulting shaped bar steel 5 is as shown in Figure 5 (shown, even if the feed spoke of the conveying device of the processing machine has at least one rib (rib) 4) and each of the feed roller 6 Touch. For this reason, the shaped bar net 5 will indeed be supported by the feed roller 6 and be correctly fed (feed). Moreover, because the section 1 2 pairs of ribs 4 are crossed at right angles, they will be placed during bending No distortion occurs, which is also an advantage. Printed by the Male Workers ’Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs and, in the aforementioned embodiment, the depth c of the bottom ditch 1 is set to 5.3% of the average diameter of the product A 2 The groove width b on the bottom side of the bottom groove 1 is determined to be 13% of the average diameter of the product, which will result in no troubles such as roll cracking, and may have a profile of 4 ribs 4 Bar steel. ≪ Possibility of industrial use > As described above, according to the method of the present invention, since the final processing roll is performed by the double-roll mill, the tapir can be stably formed and the paper The scale is applicable to the Chinese national standard (CNS & A4 specification (2 丨 0X297mm) 11 A7 B7 5 Description of the invention (9) Four-ribbed (convex rib) shaped bar steel. Therefore, the rolling equipment used to manufacture two-ribbed (convex rib) shaped bar steel can be retained, and only the final processing double-roll mill can be changed. Roll, you can tap four ribs (convex ribs) shaped bar steel. Therefore, the method and roller of the present invention can be used as a low-cost method for manufacturing four ribs (convex ribs) shaped bar steel, as well as the rolls used Suitable for use. Please read first. ^. Fill in the back page of this page to bind. Printed by the Ministry of Economic Affairs, Central Bureau of Precincts, Employee Consumer Cooperatives.